albert



(No Model.) 7 I v A. E. GATOHELL.

CRANK FOR MAGHINERY.

' Patented May 9, .1882;

FIG. 2. r'zas.

N. PETERS, Phonoliiho np'w Wnhin 'km. 041:

UNITE STATES Y Atacama .1 art nl aat' brmwi m; 'KENTUdtCIY.

CRANK FOR MACHINERY.

"PATENT. Curr es.

SPECIFICATION forming part of Letters latent No. 257,691, dated'JM ay 9,1882.

. Application filed February 4, 188g. gNo mmlel.) i

To all whom it may cohcarn:

Be it known that I, ALBERT E. GATCHELL, a citizen of the United States,residing at Newport, in the county of filampbell and State of Kentucky,have invented certain new and useful Improvements in- Cranks forMachinery, &c., of which the following is a specification.

The object of my invention is to furnish-a cheap, strong, an d durablewrought-metal crank for all kinds of machinery requiring but a mod eratetransmission of power. This result is ac complished by cutting theentire crank from a suitable blank and piercing the head or boss of thesame with an opening or enlarged eye for the reception of the shaft,said opcningbeing formed with one or more tongues or lugs, which aresubsequently bent at right angles to the web or arm, and finallyfastened to the shaft either by means of screws, pins, or other suitableretaining devices. Furthermore, the smaller end of the crank has an eyeor perforation to receive a wrist-pin or handle-shank of any convenientlength.

My invention further consists in swaging a head in the web or arm of thecrank, so as to increaseits stiffness and preventlateral springing ofthe same, as hereinafter more fully described.

In the annexed drawings, Figure 1 is a front elevation of the moresimpleformof my wroughtmetal crank. Fig. 2 is a similar elevation ofa morecomplex form of the same. Fig. 3 is a vertical section of the latterconstruction, the attaching-lugs being bent at the proper angle. Figs.at and 5 represent modifications of the invention.

To construct the more simple form of my invention, I first take awrought-metalblank of any suitable size and weight, and at a singleoperation I cut and punch therefrom the crank seen in Fig. 1. This crankhas an arm or web, a, with ahead or boss, B, at one end and anenlargement, O, at the other end, said enlargement being provided withan eye or perforation, D, to receive either a wrist-pin or thebandle-shank,E. (Seen inFig.5.) The bossBhas an opening, F, to admit theend of the shaft to which the crank is to be applied. This opening maybe square or of any other shape corresponding to the end of the shaft,but in the present case it is a complete circle,except whereperforation, g, nearits free end. Furthermore,

the web of this crank may be slotted at H for the purpose of economizingmaterial and 'ren- ,derin g the device as light as possible. The

above-described crank havingbeen ntfrom the-blank at a single,operation,or, at most, by

successive cutting and punching operations,"

the-lug G-is then bent horizontally rearward or at right angles to theface of the weblA, as seen in Fig. 3, and the device is at once readyfor attachment to the shaft." i

In the stiffer and more complex fOI'lll'l of crank (seen in Fig.2,) theopening F is provided with two opposing lugs, G g, G g, which arefinally bent so as to be parallel with each other, as represented inFig. 3, thus indicating that one, two, or more of these lugs may beemployed, according to circumstances. Additional stitfinterrupted byatongne or lug, G, having a i ness is imparted to the web of this crankby swaging therein a suitable head or crease, I, of any desired shapeand so arranged as to project either from the front or rear of said web,

but preferably from the latter.

To apply the crank it is necessary only to insert the end of the shaftin the opening F of bossB and then pass a screw or nail through theperforation g of the horizontal lug G into said shaft; but in case bothlugs are used screws are inserted in the perforations g g; or a pin maybe passed through said perforations and also through a hole in the shaftand headed up at both ends, if desired; or either one of theseperforations maybe tapped to receive a single long screw adapted to passthrough both of the lugs G G; but whichever constrnction may beemployed, it is evident the pin, screws, or equivalent retaining devicesfasten the crank to the shaft in the most secure manner. Furthermore, asthe crank is made of wrought metal, it is evident it combines themaximum of strength with a minimum ofinaterial, thereby renderingthedevice applicable to all kinds of machines, implements, tools, &c., 5

Ice

nesses of the blank, doubled or bent-back onitself, so asito affordamoreextended beari-ng for lhehandle-shalik'E. (Seen in Fig. 5.) Finally, inanother modification, the ends ofthe tongues G Gmay be sharpened, so asto be driven into the shaft or they may be arranged to occupygrooves inthe sa'm'e, a :collar'or'band being driven or shrunk into the shal" tfor the purpose of affording additional security.

I claim as my invention- 1. A wrought-metal crank having an opening, F,to receive the shaft and one or more lugs, G G, capable of being bent soas to atford a means of attachment to saidsha'i'r, substantially asdescribed.

2. A wrought-metal crank having air-opening, F, to-receive the shaftand-one or nrore perforatedlu gs, G g, G 'g, capable of being bent so as'toafl'orda 'means'of attachinent -to said anglestothe face of said'crank,ibr 'thmpurpose specified.

- 4. A wrought-metal crank having an openi ng. F,to3'recei ve the shal't. oncor more lugs, G G,"for"attachinent to said shaft, and an eye, D,to receive the wrist-pin or handle-shank, substantially as described.

5. A wrought-metal crank having an openiug E.toreeei-vethe'shaft, one ormore attaching-lugs, G-G, an eye, D, to receive the wristpin orhandle-spindle, and a stiffening head or groove, I,=disposedlongitudinally of theweb 3 5 ot' the crank, for the purpose specified.

G. A wrought-metal crank bent back on itself 'to ali'or'd a doublethickness of material toreceivethe wrist-pin or handle-spindle,substantially as described.

7. A wrought-metal crank having a groove or head swaged longitudinallyof the'web of the same, as and forth'evpurpose specified.

Intestimonywhereot I affix my signature illlllYOSPl lCP/Of vtwowitnesses.

ALBERT 'E. GATOHELL.

Witnesses JAMES H. LA-YMAN, SAML. S; CARPENTER.

